when using free transform on a layer, I often use the arrow keys to fine tune the location of something. I'm a professional production artist, and take pride in efficient use of software and in my work, so I tap the arrow keys quickly sometimes. In photoshop cs6, if you tap the arrows too quickly, the free transform box jumps back to it's original starting location. Drives me nuts, and slows me down. Seems like a bug to me.